APA način citiranja (7. izdanje)

Keene, C. (1981). The clue in the crossword cipher. Armada books.

Čikaški stil citiranja (17. izdanje)

Keene, Carolyn. The Clue in the Crossword Cipher. New York: Armada books, 1981.

MLA način citiranja (9. izdanje)

Keene, Carolyn. The Clue in the Crossword Cipher. Armada books, 1981.